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* PdBI [#jc87b3fc] ** Daddi et al. 2009, ApJ, 695, L176 [#pe0c42a3] http://adsabs.harvard.edu/abs/2009ApJ...695L.176D - This is the first time that the redshift of a far-IR bright source that is undetected at optical and near-IR wavelengths has been derived through measurement of CO lines. ** Cox et al. 2011, ApJ, in press [#n833d866] http://adsabs.harvard.edu/abs/2011arXiv1107.2924C - We report ground-based follow-up observations of the exceptional source, ID141, one the brightest sources detected so far in the H-ATLAS cosmological survey. ID141 was observed using the IRAM 30-meter telescope and Plateau de Bure interferometer (PdBI), the Submillimeter Array (SMA) and the Atacama Pathfinder Experiment (APEX) submillimeter telescope to measure the dust continuum and emission lines of the main isotope of carbon monoxide and carbon ([C I] and [C II]). The detection of strong CO emission lines with the PdBI confirms that ID141 is at high redshift (z=4.243 +/- 0.001). * EMIR/IRAM30m [#n4625db1] ** Weiss et al. 2009, ApJ, 705, L45 [#v3cb0dc6] http://adsabs.harvard.edu/abs/2009ApJ...705L..45W - We report the redshift of a distant, highly obscured submillimeter galaxy (SMG), based entirely on the detection of its CO line emission. We have used the newly commissioned Eight MIxer Receiver at the IRAM 30 m telescope, with its 8 GHz of instantaneous dual-polarization bandwidth, to search the 3 mm atmospheric window for CO emission from SMM J14009+0252, a bright SMG detected in SCUBA Lens Survey. A detection of the CO(3-2) line in the 3 mm window was confirmed via observations of CO(5-4) in the 2 mm window. Both lines constrain the redshift of SMM J14009+0252 to z = 2.9344, with high precision (δz = 2 × 10-4). Such observations will become routine in determining redshifts in the era of ALMA. ** Lestrade et al. 2010, A&A, 522, L4 [#y70e0ae0] http://adsabs.harvard.edu/abs/2010A%26A...522L...4L * Z-Spec/CSO [#ef7c517a] ** Lupu et al. 2010, ApJ, submitted [#e7047191] http://adsabs.harvard.edu/abs/2010arXiv1009.5983L ** Negrello et al. 2010, Science, 330, 800 [#xe4e1889] - CO redshift of 4 of 5 H-ATLAS ultra-bright SMGs were determined with Z-Spec on CSO (and confirmed by PdBI observations). - The redshift of one of the H-ATLAS sources (ID181) was measured by Zpectrometer on GBT (and confirme by PdBI observations). ** Scott et al. 2011, ApJ, 733, 29 [#b77b464a] http://adsabs.harvard.edu/abs/2011ApJ...733...29S - We report on the redshift measurement and CO line excitation of HERMES J105751.1+573027 (HLSW-01), a strongly lensed submillimeter galaxy discovered in Herschel/SPIRE observations as part of the Herschel Multi-tiered Extragalactic Survey (HerMES). - With the 100 GHz instantaneous bandwidth of the Z-Spec instrument on the Caltech Submillimeter Observatory, we robustly identify a redshift of z = 2.958 ± 0.007 for this source, using the simultaneous detection of four CO emission lines (J = 7 → 6, J = 8 → 7, J = 9 → 8, and J = 10 → 9). * Zpectrometer/GBT [#ee50665e] ** Swinbank et al. 2010, Nature, 464, 733 [#a04d3c2e] http://adsabs.harvard.edu/abs/2010Natur.464..733S - The mid- and far-infrared colours (S24/ S70=0.4 +/- 0.2) and red optical/near-infrared colours also suggest that the galaxy lies beyond the cluster at z>1.5 (ref. 10 and Supplementary Information), and indeed detection of carbon monoxide (CO) J=1–0 emission at 34.64GHz unambiguously identified the redshift as z=2.3259 +/- 0.0001 (Fig. 2). ** Frayer et al. 2011, ApJ, 726, 22 [#jf81ea8f] http://adsabs.harvard.edu/abs/2011ApJ...726L..22F - The Zpectrometer instrument on the Green Bank Telescope (GBT) was used to measure the redshifts and constrain the masses of the cold molecular gas reservoirs for two candidate high-redshift lensed sources. - We derive CO(1-0) redshifts of z = 3.042 ± 0.001 and z = 2.625 ± 0.001, and measure molecular gas masses of (1-3) ×1010 M sun, corrected for lens amplification and assuming a conversion factor of α = 0.8 M sun( K km s-1 pc2)-1.
